第三代单晶高温合金DD9显微组织薄壁效应
TG146.1+5%TB31; 采用光学显微镜、场发射扫描电子显微镜、电子探针仪研究第三代单晶高温合金DD9不同试样(双层壁超冷涡轮叶片、复合气冷涡轮叶片、精铸薄壁试样以及圆柱试棒)的显微组织及其薄壁效应.结果表明:四种试样的显微组织均存在差异.截面尺寸相同时,DD9单晶涡轮叶片的铸态一次枝晶间距、γ'相尺寸及铸态与热处理态试样枝晶偏析均大于精铸薄壁试样;完全热处理后,截面尺寸相同的单晶涡轮叶片与精铸薄壁试样的γ'相尺寸相近.随截面尺寸减小,DD9合金薄壁试样铸态一次枝晶间距、铸态与热处理态γ'相尺寸及枝晶偏析均呈减小趋势....
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| Published in | 材料工程 Vol. 53; no. 1; pp. 55 - 64 |
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| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国航发北京航空材料研究院先进高温结构材料重点实验室,北京 100095
20.01.2025
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 |
| DOI | 10.11868/j.issn.1001-4381.2024.000210 |
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| Abstract | TG146.1+5%TB31; 采用光学显微镜、场发射扫描电子显微镜、电子探针仪研究第三代单晶高温合金DD9不同试样(双层壁超冷涡轮叶片、复合气冷涡轮叶片、精铸薄壁试样以及圆柱试棒)的显微组织及其薄壁效应.结果表明:四种试样的显微组织均存在差异.截面尺寸相同时,DD9单晶涡轮叶片的铸态一次枝晶间距、γ'相尺寸及铸态与热处理态试样枝晶偏析均大于精铸薄壁试样;完全热处理后,截面尺寸相同的单晶涡轮叶片与精铸薄壁试样的γ'相尺寸相近.随截面尺寸减小,DD9合金薄壁试样铸态一次枝晶间距、铸态与热处理态γ'相尺寸及枝晶偏析均呈减小趋势. |
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| AbstractList | TG146.1+5%TB31; 采用光学显微镜、场发射扫描电子显微镜、电子探针仪研究第三代单晶高温合金DD9不同试样(双层壁超冷涡轮叶片、复合气冷涡轮叶片、精铸薄壁试样以及圆柱试棒)的显微组织及其薄壁效应.结果表明:四种试样的显微组织均存在差异.截面尺寸相同时,DD9单晶涡轮叶片的铸态一次枝晶间距、γ'相尺寸及铸态与热处理态试样枝晶偏析均大于精铸薄壁试样;完全热处理后,截面尺寸相同的单晶涡轮叶片与精铸薄壁试样的γ'相尺寸相近.随截面尺寸减小,DD9合金薄壁试样铸态一次枝晶间距、铸态与热处理态γ'相尺寸及枝晶偏析均呈减小趋势. |
| Abstract_FL | The microstructure and thin-walled effect of different samples(double-wall ultra-cooling turbine blades,combined cooling turbine blades,investment casting thin-walled specimen,and round bar specimen)of the third-generation single crystal superalloy DD9 are investigated by optical microscope,field emission scanning electron microscope,and electron probe apparatus.The results show that there are differences in the microstructures of the four specimens.When the section sizes are the same,the as-cast primary dendrite arm spacing,the sizes of γ'phases,and the dendrite segregation of the as-cast and heat-treated specimens of DD9 single crystal turbine blades are all larger than those of the investment casting thin-walled specimens.After full heat treatment,the sizes of the γ'phases of single crystal turbine blades with the same cross-sectional size are similar to those of investment casting thin-walled specimens.The as-cast primary dendrite arm spacing,the sizes of γ'phases,and the dendrite segregation of the as-cast and heat-treated thin-walled specimens of DD9 alloy all decrease with the decrease of the cross-sectional size. |
| Author | 王效光 李嘉荣 赵金乾 杨亮 王锐 刘世忠 陈巧 杨万鹏 |
| AuthorAffiliation | 中国航发北京航空材料研究院先进高温结构材料重点实验室,北京 100095 |
| AuthorAffiliation_xml | – name: 中国航发北京航空材料研究院先进高温结构材料重点实验室,北京 100095 |
| Author_FL | WANG Rui CHEN Qiao YANG Liang YANG Wanpeng LI Jiarong WANG Xiaoguang LIU Shizhong ZHAO Jinqian |
| Author_FL_xml | – sequence: 1 fullname: YANG Wanpeng – sequence: 2 fullname: LI Jiarong – sequence: 3 fullname: LIU Shizhong – sequence: 4 fullname: ZHAO Jinqian – sequence: 5 fullname: WANG Xiaoguang – sequence: 6 fullname: YANG Liang – sequence: 7 fullname: WANG Rui – sequence: 8 fullname: CHEN Qiao |
| Author_xml | – sequence: 1 fullname: 杨万鹏 – sequence: 2 fullname: 李嘉荣 – sequence: 3 fullname: 刘世忠 – sequence: 4 fullname: 赵金乾 – sequence: 5 fullname: 王效光 – sequence: 6 fullname: 杨亮 – sequence: 7 fullname: 王锐 – sequence: 8 fullname: 陈巧 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.11868/j.issn.1001-4381.2024.000210 |
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| DocumentTitle_FL | Thin-walled effect of microstructure of third-generation single crystal superalloy DD9 |
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| Keywords | 薄壁效应 第三代单晶高温合金 thin-walled effect 涡轮叶片 third-generation single crystal superalloy 截面尺寸 DD9 turbine blade cross-sectional size |
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| Title | 第三代单晶高温合金DD9显微组织薄壁效应 |
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